Will the dryness on lips ever fully heal? (Photo)

I feel that after about a month my lips were significantly less dry and inflamed but since then the dryness has seemed to remain and not improve in the past month and it's now just pasted 2 months post accutane and still my lips don't really have any real moister being naturally produced? Is it possible the oil glands are perminantly damaged and o will have to use lip balm forever to keep them moist. Most others seem to heal lips within a few weeks..

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